0
Research Papers

Dynamics of a Superconducting Linear Slider

[+] Author and Article Information
Ignacio Valiente-Blanco

Mem. ASME
Instituto Pedro Juan de Lastanosa,
Avenida de la Universidad 30,
Leganés E-28911, Spain
e-mail: ivalient@ing.uc3m.es

Jose-Luis Perez-Diaz

Mem. ASME
Dto. de Ingeniería Mecánica,
Universidad Carlos III de Madrid,
Butarque, 15,
Leganés E-28911, Spain

Efren Diez-Jimenez

Dto. de Ingeniería Mecánica,
Universidad Carlos III de Madrid,
Butarque, 15,
Leganés E-28911, Spain

1Corresponding author.

Contributed by the Technical Committee on Vibration and Sound of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received May 29, 2013; final manuscript received October 20, 2014; published online November 14, 2014. Assoc. Editor: Philip Bayly.

J. Vib. Acoust 137(2), 021002 (Apr 01, 2015) (4 pages) Paper No: VIB-13-1183; doi: 10.1115/1.4028928 History: Received May 29, 2013; Revised October 20, 2014; Online November 14, 2014

In this paper, the dynamic behavior of a one degree-of-freedom (DOF) contactless linear slider based on superconducting magnetic levitation is experimentally analyzed. The device is intended for precision positioning of an optic mirror in cryogenic environments. Different prototypes of this device have been tested at cryogenic temperatures (77 K), and their mechanical behavior characterized in the sliding direction for forced and unforced oscillations. Experimental results reveal that the slider is self-stable at the initial equilibrium position and the dynamic behavior fits well an underdamped harmonic oscillator. Finally, the device showed great potential for horizontal vibration isolation, acting as a low-pass filter with a resonance at about 0.9 Hz.

FIGURES IN THIS ARTICLE
<>
Copyright © 2015 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

Picture of the device: (1) YBaCuO superconductor disks; (2) slider PM; (3) coils; and (4) optic mirror cube

Grahic Jump Location
Fig. 2

Sketch of the experimental setup: (1) YBaCuO superconductor disks; (2) slider, PM; (3) coils; (4) laser triangulator ILD 1402; (5) polished aluminum mirror cube; (6) lab-jack stand; (7) optic table; and (8) liquid nitrogen vessel. d: distance between the superconducting disks and HFC: height of field cooling.

Grahic Jump Location
Fig. 3

Position X versus DC current in the coil for different values of d. T = 77 K and HFC = 3 mm in all cases.

Grahic Jump Location
Fig. 4

Position X versus time for an unforced oscillation of the slider. T = 77 K, d = 84 mm, and HFC = 3 mm. Reference amplitude of the oscillation about 10 mm.

Grahic Jump Location
Fig. 5

Power spectrum versus frequency of the Lomb-normalized periodogram of the signal in Fig. 4.

Grahic Jump Location
Fig. 6

Speed versus position X of the slider is represented by gray line. The ideal response of a harmonic oscillator with ξ = 0.18 and ω0 = 0.93 is represented by the black dashed line.

Grahic Jump Location
Fig. 7

Transmissibility versus frequency ratio. Displacement amplitude for f ∼0 Hz is approximately 2.3 mm. Dashed line represent transmissibility for a harmonic oscillator with ξ = 0.18 and ω0 = 0.93 Hz.

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In